Excellent advice from Tristan above. In short, I would not even ask him for a narration while you’re in this possibly negative stage. I’d be afraid he’d just be adding narration to the list of what is “negative” in his mind!
I would keep reading aloud – as much as possible/as much as you have the time – to help your son “fall in love” with books. Characters, settings, description of scenery, being able to imagine the people in the books as though they are right there in the room with him…these are all things that come with time, but it happens more quickly and more fully the MORE you read, or the more time he spends with books. As Tristan mentioned above, this doesn’t mean long readings. It just means often. Once ‘falling in love with books’ happens, he will likely WANT to share what’s on his mind about the story, the characters, etc. I would wait for this to happen (him naturally wanting to chat about book stuff with you) before I firmly required an oral narration. In the meatime, be assured that every time he shares his thoughts with you or tells you about something meaningful to him, this is most certainly working and breaking-in the skills he needs for oral narration….as long as you are doing the listening and letting him run loose to do the talking.
Another point to keep in mind: The age of 6 doesn’t have to be carved in stone. I have three sons; each took off and began to fly on narration at a slightly different time. One was definitely a full month or two past his 6th birthday, and another son 6.5. My third son enjoyed narrations (and did amazingly well) when he was at his 6th birthday, then went through a dry spell (during which time he began to excel in art and pencil sketching, but was hopeless at oral narrations) and now, at just turned 7, he’s doing amazingly well on oral narrations once again. I think the best advice is often said here on the forum (a quote from Sonya, I think): teach the child, not the curriculum. For some kids, 6 is the perfect age. For others, it will be 6.5 or even 7. I am a firm believer (having learned the hard way) that “pushing” or requiring something before they are ready can really make you take 5 steps backwards before you get to go forwards again.
Hope this helps!
Blessings, Angie